1989 Italian Open – Women's singles

Gabriela Sabatini was the defending champion and won in the final 6–2, 5–7, 6–4 against Arantxa Sánchez.

Seeds
A champion seed is indicated in bold text while text in italics indicates the round in which that seed was eliminated. The top eight seeds received a bye to the second round.


 * 1) 🇦🇷 Gabriela Sabatini (champion)
 * 2) 🇧🇬 Manuela Maleeva (third round)
 * 3) 🇨🇦 Helen Kelesi (third round)
 * 4) 🇪🇸 Arantxa Sánchez (final)
 * 5) 🇦🇺 Hana Mandlíková (third round)
 * 6) 🇮🇹 Sandra Cecchini (quarterfinals)
 * 7) 🇦🇹 Judith Wiesner (quarterfinals)
 * 8) 🇮🇹 Raffaella Reggi (quarterfinals)
 * 9) 🇺🇸 Terry Phelps (third round)
 * 10) 🇦🇷 Bettina Fulco (semifinals)
 * 11) 🇦🇺 Nicole Provis (first round)
 * 12) 🇫🇷 Isabelle Demongeot (third round)
 * 13) 🇦🇹 Barbara Paulus (third round)
 * 14) 🇫🇷 Nathalie Tauziat (semifinals)
 * 15) 🇧🇷 Niege Dias (second round)
 * 16) 🇺🇸 Ann Grossman (first round)